GENERAL DESCRIPTION

The TDA1591 is a monolithic bipolar integrated circuit providing the stereo decoder function and noise blanking for FM car radio applications.

The device operates in a power supply range of 7.5 to 12 V.

FEATURES

? Adjustment-free voltage controlled PLL oscillator for ceramic resonator (f = 456 kHz)

? Pilot signal dependent mono/stereo switching

? Analog control of mono/stereo change over

[stereo blend, Stereo Noise Controller (SNC)]

? Adjacent channel noise suppression (114 kHz)

? Pilot canceller

? Analog control of de-emphasis; High Cut Control (HCC)

? Applicable as source selector for AM/FM/cassette switching

? Separate interference noise detector

? Integrated input low-pass filter for delayed noise blanking

? Noise blanking at MPX-demodulator outputs

? Internal voltage stabilization.